计算题(1)3-15;(2)(-13)-(-8);(3)12+(-7)-(-8)-15;(4)(-17)+23+(-53)-(-36);(5)39-15+16-25-(+25);(6)(-1.4)-(

题目简介

计算题(1)3-15;(2)(-13)-(-8);(3)12+(-7)-(-8)-15;(4)(-17)+23+(-53)-(-36);(5)39-15+16-25-(+25);(6)(-1.4)-(

题目详情

计算题
(1)3-15;
(2)(-13)-(-8);
(3)12+(-7)-(-8)-15;
(4)(-17)+23+(-53)-(-36);
(5)39-15+16-25-(+25);
(6)(-1.4)-(+2
2
3
)-(-1
2
5
)+(-3.2);
(7)(-1.75)-(-4)-(+2
1
4
)-
1
6

(8)-3-|-1|-(-3)-(0-3
1
2
).
题型:解答题难度:中档来源:不详

答案

(1)3-15=-12;
(2)(-13)-(-8)=-13+8=-5;
(3)12+(-7)-(-8)-15=12-7+8-15=-2;
(4)(-17)+23+(-53)-(-36)=-17+23-53+36=-70+59=-11;
(5)39-15+16-25-(+25)=39-15+16-25-25=55-65=-10;
(6)(-1.4)-(+2class="stub"2
3
)-(-1class="stub"2
5
)+(-3.2)=(-1class="stub"2
5
+1class="stub"2
5
)-(2class="stub"2
3
+3class="stub"1
5
)=-5class="stub"13
15

(7)(-1.75)-(-4)-(+2class="stub"1
4
)-class="stub"1
6
=4-(1class="stub"3
4
+2class="stub"1
4
)-class="stub"1
6
=-class="stub"1
6

(8)-3-|-1|-(-3)-(0-3class="stub"1
2
)=-3-1+3+3class="stub"1
2
=2class="stub"1
2

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